In the fourth graphic in the series, we look at how to replace runs the Chicago Cubs will be losing due to free agency. Even though they have Bryan LaHair waiting at 1B, Prince Fielder's bat can put them on the fast track to rebuilding (that is with the help of upgraded pitching).

Instead of just using runs scored straight up, I've used wRC (weighted runs created) and wRAA (weighted runs above average) to get a more accurate reading. 2012 projections are from Bill James data on Fangraphs.

Click after the jump to see how the Cubs can stay competitive.

Signing David DeJesus took care of replacing Reed Johnson, so that's that. According to Bill James projections for 2012, for 3B, we have newly acquired Ian Stewart sharing time with Jeff Baker (in the projections, they're slated to play under 90 games each, so we'll see).

Stewart/Baker combo: 53 wRC
Ramirez: 84 wRC

At first base, clearly, Fielder would be a clear upgrade, but, the only thing is it blocks Bryan LaHair.

Check out the previous in this series: A's | Mets | Brewers

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